You can also achieve the same thing with
Sandboxie.
Advantages:
Does not require special/h4c|<7d IMVU clients.
Supports all IMVU versions.
Description:
This method should in all version of IMVU... and I use it for 2 IMVU accounts running simultaneously without problems. Reading further on how to use the software allows you to run more than 2 IMVU's.
Steps are pretty easy...
1. Download and install sandboxie (link located above)
2. Run spawns of IMVU in a sandboxed environment.
3. (optional) create more unique sandboxes for spawning more IMVU accounts.
Only limitation: your computer.